还有一点忘了说了, 就是公差计算时的视场设定? 是Y对称? XY对称? 用户自定义? 我的解释只是针对用户自定义时的结果. \9 dSI
具体的内容请见下面: !fr /WxJ
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Fields: Generally speaking, the field definitions used for optimization and analysis are inadequate for <n< @
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tolerancing. for example, a rotationally symmetric lens may use field definitions of 0, 7, and 10 degrees. For J
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tolerancing purposes, the lack of symmetry in the field definitions may cause inaccurate results when analyzing f~ -81ctu
tilt or decenter tolerances. When constructing a merit function to use for tolerancing ZEMAX can use three t Jo,^fdfv
different field settings: 8v"tOa4D7
Y-Symmetric: ZEMAX computes the maximum field coordinate, then defines new field points at +1.0, +0.7, |^Nz/PN
0.0, -0.7, and -1.0 times the maximum field coordinate, in the Y direction only. All X field values are set to w~@. &
zero. This is the default for rotationally symmetric lenses. Z {RRhJ
XY-Symmetric: Similar to Y-Symmetric, except there are 9 field points used. The 5 Y-Symmetric points are $Z(fPKRN/
used, and -1.0, -0.7, +0.7, and +1.0 are added in the X axis direction only. Oi +(`
User Defined: Use whatever field definitions exist in the current lens file. This option is required when using X m& L@2V
vignetting factors, tolerancing multiple configuration lenses, or using tolerance scripts. It is also highly X9C)FS
recommended when tolerancing non rotationally symmetric lenses or lenses with complex field weighting Z<6xQTx
that user defined fields be used.
